TELEPHONE CALL SYSTEM AND DEVICE THEREOF

PROBLEM TO BE SOLVED: To call with respect to a telephone set which uses a number display service in a free-of-charge state that is set before the start of a call with the voices, which have been previously recorded corresponding to an originating telephone number. SOLUTION: Voices are recorded, corresponding to the originating telephone number which is transmitted via a number display service. Then whether or not the originating telephone number is registered is decided through collation in a free-of-charge state set before the start of a call and when the originating telephone number is received. When the registered originating telephone number is confirmed, the voices corresponding to the originating telephone number are outputted. If the registered originating telephone number is not confirmed, a normal call voice is outputted. Then the output of the normal call voice is discontinued by the starting of the call.